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Rookie Ollie Wines, who had 18 disposals and kicked two vital second half goals, told Grandstand the win added to his dream debut season.

"It's very special, it's hard to find words to describe," he said.

"I've been lucky enough to play finals in my first year, and now I've won my first final - all the boys are ecstatic, all the coaches are really happy (with the result)."

Coach Ken Hinkley has taken Port Adelaide from the lower half of the ladder to an AFL semi-final in one season.

Wines said the former Geelong player and assistant coach had been great for the club.

"Ken, I think everyone knows he's such an honest coach, he tells us how it is," he said.

"I think (that) is the traditional Port Adelaide way of playing football.

"He's been awesome (as a coach) for me."

Power vow to take Cats final in their stride

Wines denied the Power would be overawed by their next opponents, the Cats.

"We're so excited at the moment, we're going to relish this win for a while and then move on," he said.

"We'll take it (the semi-final) in our stride.

"(It's) just another challenge in our way, we've overcome a lot this year - we'll hit it with everything we've got."

It was a game where goals came largely in bursts, as first one team and then the other gained a temporary ascendancy.

The Power got off to the better start, leading by six points at quarter time before kicking three quick goals in the second term to silence the crowd and threaten to break the game open.

Collingwood hit back with a string of attacks - Marley Williams kicked the Magpies' second midway through the term, and then Travis Cloke and Brent Macaffer added two more to tighten the game up dramatically.

But their defence broke down late in the quarter as Chad Wingard was left 20m in the clear to kick Port Adelaide's sixth of the night.

The Power led by two goals at the half, but early goals to Cloke and Swan drew the Magpies level in the third quarter, before Swan kicked his third to put Collingwood ahead.

The game took another swing, however, as Chad Wingard grabbed a second and then the Power took advantage of a Magpies turnover which Wines turned into a goal.

Port Adelaide led by eight points at three quarter-time.

Dayne Beams kicked a goal within 30 seconds of the final quarter and Cloke kicked another - which had to be confirmed by video review to change the lead once more.

But the Power would not give in, as Boak soccered a goal and then Wines kicked his second to give Port Adelaide a 10-point break, and Wingard and Schulz added two more majors to seal the stunning win.